1 /* 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)tr.c 8.2 (Berkeley) 5/4/95 35 * $FreeBSD: src/usr.bin/tr/tr.c,v 1.8.2.2 2002/07/29 12:59:33 tjr Exp $ 36 * $DragonFly: src/usr.bin/tr/tr.c,v 1.3 2003/10/04 20:36:53 hmp Exp $ 37 */ 38 39 #include <sys/types.h> 40 41 #include <err.h> 42 #include <locale.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 48 #include "extern.h" 49 50 static int string1[NCHARS] = { 51 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* ASCII */ 52 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 53 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 54 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 55 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 56 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 57 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 58 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 59 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 60 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 61 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 62 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 63 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 64 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 65 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 66 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 67 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 68 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 69 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 70 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 71 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 72 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 73 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 74 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 75 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 76 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 77 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 78 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 79 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 80 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 81 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 82 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 83 }, string2[NCHARS]; 84 85 STR s1 = { STRING1, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 86 STR s2 = { STRING2, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 87 88 static void setup(int *, char *, STR *, int); 89 static void usage(void); 90 91 int 92 main(int argc, char **argv) 93 { 94 int ch, cnt, lastch, *p; 95 int cflag, dflag, sflag, isstring2; 96 97 (void)setlocale(LC_ALL, ""); 98 99 cflag = dflag = sflag = 0; 100 while ((ch = getopt(argc, argv, "cdsu")) != -1) 101 switch((char)ch) { 102 case 'c': 103 cflag = 1; 104 break; 105 case 'd': 106 dflag = 1; 107 break; 108 case 's': 109 sflag = 1; 110 break; 111 case 'u': 112 setbuf(stdout, (char *)NULL); 113 break; 114 case '?': 115 default: 116 usage(); 117 } 118 argc -= optind; 119 argv += optind; 120 121 switch(argc) { 122 case 0: 123 default: 124 usage(); 125 /* NOTREACHED */ 126 case 1: 127 isstring2 = 0; 128 break; 129 case 2: 130 isstring2 = 1; 131 break; 132 } 133 134 /* 135 * tr -ds [-c] string1 string2 136 * Delete all characters (or complemented characters) in string1. 137 * Squeeze all characters in string2. 138 */ 139 if (dflag && sflag) { 140 if (!isstring2) 141 usage(); 142 143 setup(string1, argv[0], &s1, cflag); 144 setup(string2, argv[1], &s2, 0); 145 146 for (lastch = OOBCH; (ch = getchar()) != EOF;) 147 if (!string1[ch] && (!string2[ch] || lastch != ch)) { 148 lastch = ch; 149 (void)putchar(ch); 150 } 151 exit(0); 152 } 153 154 /* 155 * tr -d [-c] string1 156 * Delete all characters (or complemented characters) in string1. 157 */ 158 if (dflag) { 159 if (isstring2) 160 usage(); 161 162 setup(string1, argv[0], &s1, cflag); 163 164 while ((ch = getchar()) != EOF) 165 if (!string1[ch]) 166 (void)putchar(ch); 167 exit(0); 168 } 169 170 /* 171 * tr -s [-c] string1 172 * Squeeze all characters (or complemented characters) in string1. 173 */ 174 if (sflag && !isstring2) { 175 setup(string1, argv[0], &s1, cflag); 176 177 for (lastch = OOBCH; (ch = getchar()) != EOF;) 178 if (!string1[ch] || lastch != ch) { 179 lastch = ch; 180 (void)putchar(ch); 181 } 182 exit(0); 183 } 184 185 /* 186 * tr [-cs] string1 string2 187 * Replace all characters (or complemented characters) in string1 with 188 * the character in the same position in string2. If the -s option is 189 * specified, squeeze all the characters in string2. 190 */ 191 if (!isstring2) 192 usage(); 193 194 s1.str = argv[0]; 195 s2.str = argv[1]; 196 197 if (cflag) 198 for (cnt = NCHARS, p = string1; cnt--;) 199 *p++ = OOBCH; 200 201 if (!next(&s2)) 202 errx(1, "empty string2"); 203 204 ch = s2.lastch; 205 /* If string2 runs out of characters, use the last one specified. */ 206 if (sflag) 207 while (next(&s1)) { 208 string1[s1.lastch] = ch = s2.lastch; 209 string2[ch] = 1; 210 (void)next(&s2); 211 } 212 else 213 while (next(&s1)) { 214 string1[s1.lastch] = ch = s2.lastch; 215 (void)next(&s2); 216 } 217 218 if (cflag) 219 for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt) 220 *p = *p == OOBCH ? ch : cnt; 221 222 if (sflag) 223 for (lastch = OOBCH; (ch = getchar()) != EOF;) { 224 ch = string1[ch]; 225 if (!string2[ch] || lastch != ch) { 226 lastch = ch; 227 (void)putchar(ch); 228 } 229 } 230 else 231 while ((ch = getchar()) != EOF) 232 (void)putchar(string1[ch]); 233 exit (0); 234 } 235 236 static void 237 setup(int *string, char *arg, STR *str, int cflag) 238 { 239 int cnt, *p; 240 241 str->str = arg; 242 bzero(string, NCHARS * sizeof(int)); 243 while (next(str)) 244 string[str->lastch] = 1; 245 if (cflag) 246 for (p = string, cnt = NCHARS; cnt--; ++p) 247 *p = !*p; 248 } 249 250 static void 251 usage(void) 252 { 253 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 254 "usage: tr [-csu] string1 string2", 255 " tr [-cu] -d string1", 256 " tr [-cu] -s string1", 257 " tr [-cu] -ds string1 string2"); 258 exit(1); 259 } 260